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Wed Jul 21 06:00:01 EDT 2021
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Slept from ten-thirty to six without waking.
Not as warm.
Mostly sunny then becoming partly cloudy early in the afternoon then becoming mostly sunny.
Highs in the mid 70s.
North winds 5 to 10 mph.
Thirty-five minute walk in the morning.
Sunny and not hot.
Saw robins and mourning doves.
Work
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- investigate Entrata renewal charge permissions for Carolyn
Done.
- upgrade pfSense
Done.
- remember Fergus backup
Done.
- investigate accelerated rent credits for Bob
No.
Cicadas singing outside.
Home
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Caffeine and theanine exert opposite effects on attention under emotional arousal
https://news.ycombinator.com/item?id=27905646
https://pubmed.ncbi.nlm.nih.gov/28044450/
> Tea is perceived as more relaxing than coffee, even though both contain caffeine. L-theanine in tea may account for the difference. Consumed together, caffeine and theanine exert similar cognitive effects to that of caffeine alone, but exert opposite effects on arousal, in that caffeine accentuates and theanine mitigates physiological and felt stress responses. We evaluated whether caffeine and theanine influenced cognition under emotional arousal. Using a double-blind, repeated-measures design, 36 participants received 4 treatments (200 mg caffeine + 0 mg theanine, 0 mg caffeine + 200 mg theanine, 200 mg caffeine + 200 mg theanine, 0 mg caffeine + 0 mg theanine) on separate days. Emotional arousal was induced by highly arousing negative film clips and pictures. Mood, salivary cortisol, and visual attention were evaluated. Caffeine accentuated global processing of visual attention on the hierarchical shape task (p < 0.05), theanine accentuated local processing (p < 0.05), and the combination did not differ from placebo. Caffeine reduced flanker conflict difference scores on the Attention Network Test (p < 0.05), theanine increased difference scores (p < 0.05), and the combination did not differ from placebo. Thus, under emotional arousal, caffeine and theanine exert opposite effects on certain attentional processes, but when consumed together, they counteract the effects of each other.
Fifteen minutes of meditation in the early evening.
Watched more Hill Street Blues.
Minutes spent packing: 60
Servings: grains 5/6, fruit 2/4, vegetables 3/4, dairy 4/2, meat 2/3, nuts 0/0.5
Breakfast: coffee, cucumber
Brunch: pineapple
Lunch: macaroni and cheese with potatoes and sausage
Afternoon snack: pineapple
Dinner: popcorn, ramen
-31
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